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Finding the Fourth Proportional to 1,297,372.98, 1,790,364 and 708,672.90

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Solution

The fourth proportional to 1,297,372.98, 1,790,364 and 708,672.90 is: 977,962.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,372.98 : 1,790,364 = 708,672.90 : x
  2. Step 2: Convert to fraction form
    1,297,372.98/1,790,364 = 708,672.90/x
  3. Step 3: Cross multiply
    1,297,372.98x = 1,790,364 × 708,672.90
  4. Step 4: Simplify right side
    1,297,372.98x = 1,268,782,447,935.60
  5. Step 5: Solve for x
    x = 1,268,782,447,935.60/1,297,372.98
  6. Step 6: Final answer
    x = 977,962.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.